UD-Stomp Modulation Delay
Allan Holdsworth collaboration—8-band delay (max 5.5sec linked), 180 programs, 12V AC power—2.2kg, 280x70x184mm.
Yamaha collaborated with fusion guitar legend Allan Holdsworth to create the UD-Stomp, addressing Holdsworth's specific requirements for complex delay and modulation effects. The pedal's 8-band delay architecture allows independent delay times across eight separate bands, creating rhythmic patterns and textures impossible with single-tap delay pedals. Each band provides maximum delay time of 696ms; when linked, total delay reaches 5.5 seconds for ambient washes and soundscape building.
Eight bands of stereo chorus/flanger effects run alongside the delay section, allowing simultaneous modulation and delay processing. Delay parameters include Time, Loop Filter (Hi/Lo Cut for frequency shaping of repeats), Feedback, Tap tempo, Pan, and Level per band. One hundred eighty sound programs total (90 preset/90 user) store complex multi-band configurations. 20-bit + 3-bit A/D conversion at 44.1kHz, coaxial digital output for recording.
Requires exclusive AC-10 power adapter at 12V AC/1000mA—different from standard 9V DC guitar pedals and incompatible with common power supplies. 15W power consumption, 2.2kg weight, dimensions 280x70x184mm make this a substantial floor unit rather than compact stompbox. The UD-Stomp targeted advanced players seeking Holdsworth-style delay complexity and modulation depth, suitable for fusion, progressive rock, and experimental music where intricate delay patterns and multi-tap rhythmic effects drive compositional structure.
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